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Ceanothus is a genus of about 50–60 species of nitrogen-fixing shrubs and small trees in the buckthorn family (). [3] [4] [2] [5] Common names for members of this genus are buckbrush, California lilac, soap bush, or just ceanothus.
Which Southern California native plants survived climate change and mass extinctions 13,000 years ago and still live today? La Brea Tar Pits researchers compiled a list. ... Juniper branch and ...
Ceanothus verrucosus is a species of shrub in the family Rhamnaceae known by the common names wart-stem ceanothus, barranca brush, coast lilac and white coast ceanothus. It is endemic to northwestern Baja California and San Diego County , where it grows in coastal sage scrub and coastal succulent scrub habitats.
Ceanothus roderickii is a rare species of shrub in the family Rhamnaceae known by the common name Pine Hill ceanothus. It is endemic to western El Dorado County, California , where it grows in the chaparral and woodlands of the Sierra Nevada foothills , such as the Pine Hill Ecological Reserve .
Ceanothus thyrsiflorus, known as blueblossom or blue blossom ceanothus, is an evergreen shrub in the buckthorn family Rhamnaceae that is endemic to Oregon and California in the US. The term 'Californian lilac' is also applied to this and other varieties of ceanothus, though it is not closely related to Syringa , the true lilac.
This plant has a growth habit described as ascending to erect and may attain height. The plant's preferred habitat is on shrub-covered, rocky, volcanic slopes. The hermaphrodite blue or purple flowers bloom in April and May. [2] The sub-globose fruits are five to six millimeters in diameter. [3]
Ceanothus purpureus, with the common name Napa ceanothus [1] and hollyleaf ceanothus, is a species of shrub in the family Rhamnaceae. It is endemic to northern California , where it is known only from the Inner North Coast Ranges north of the Bay Area , mainly in Sonoma and Napa Counties . [ 1 ]
Ceanothus tomentosus, with the common name woollyleaf ceanothus, is a species of shrub in the family Rhamnaceae. It is characterized by pale-blue to deep blue flowers and wooly leaves. It is native to California and Baja California, having an unusual disjunct distribution in the Peninsular Ranges and the north-central Sierra Nevada.